All assignees
800 prefixes in 281 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 281-700 | — | — | ||
| 281-701 | BAMMEL | 6701 | — | — |
| 281-702 | HOUSTON | 6506 | — | Yes |
| 281-703 | HOUSTON | 6506 | — | — |
| 281-704 | BAMMEL | 6701 | — | — |
| 281-705 | LANGHAMCRK | 6506 | — | — |
| 281-706 | HUMBLE | 6534 | 2006-10-04 | Yes |
| 281-707 | BAYTOWN | 4344 | — | Yes |
| 281-708 | BAYTOWN | 4344 | — | — |
| 281-709 | APOLLO | 7239 | — | Yes |
| 281-710 | ARCOLA | 7239 | — | Yes |
| 281-711 | XXXXXXXXXX | MULT | — | — |
| 281-712 | KATY | 7670 | — | Yes |
| 281-713 | HUMBLE | 6534 | 2007-09-05 | Yes |
| 281-714 | HOUSTON | 6506 | 2007-07-10 | Yes |
| 281-715 | DEER PARK | 7670 | — | Yes |
| 281-716 | BAMMEL | 7239 | — | Yes |
| 281-717 | BARKER | 7239 | — | Yes |
| 281-718 | HOUSTON | 6630 | — | — |
| 281-719 | SPRING | 9533 | — | Yes |
| 281-720 | SATSUMA | 7229 | — | Yes |
| 281-721 | HSTNSUBURB | 9533 | — | Yes |
| 281-722 | HOUSTON | 6506 | 2025-12-03 | Yes |
| 281-723 | LANGHAMCRK | 6506 | — | — |
| 281-724 | LEAGUECITY | 318J | — | Yes |
| 281-725 | RICHMNRNBG | 9533 | 2006-03-07 | Yes |
| 281-726 | HOUSTON | 6506 | — | Yes |
| 281-727 | HOUSTON | 9533 | — | Yes |
| 281-728 | HOUSTON | 6506 | — | — |
| 281-729 | DICKINSON | 318J | 2019-04-30 | Yes |
| 281-730 | BAMMEL | 9533 | — | Yes |
| 281-731 | HOUSTON | 6506 | — | — |
| 281-732 | HOUSTON | 6506 | — | — |
| 281-733 | HOUSTON | 6506 | — | Yes |
| 281-734 | HOUSTON | 6506 | — | — |
| 281-735 | HOUSTON | 6630 | — | — |
| 281-736 | BAMMEL | 6701 | 2006-01-05 | Yes |
| 281-737 | SATSUMA | 7074 | 2009-03-18 | Yes |
| 281-738 | BEACH CITY | 6114 | 2006-02-11 | Yes |
| 281-739 | BAYTOWN | 6534 | 2006-01-05 | Yes |
| 281-740 | HOUSTON | 6506 | 2006-09-22 | Yes |
| 281-741 | HSTNSUBURB | 318J | 2006-11-21 | Yes |
| 281-742 | WESTFIELD | 9533 | — | Yes |
| 281-743 | LANGHAMCRK | 6506 | — | Yes |
| 281-744 | HOUSTON | 6506 | — | — |
| 281-745 | HOUSTON | 6506 | — | Yes |
| 281-746 | CYPRESS | 516C | 2006-01-13 | Yes |
| 281-747 | PORTER | 2114 | 2001-05-22 | Yes |
| 281-748 | BAMMEL | 6701 | — | — |
| 281-749 | HSTNSUBURB | 9533 | — | Yes |
| 281-750 | RICHMNRNBG | 7670 | — | Yes |
| 281-751 | MONTBLVIEU | 7670 | — | Yes |
| 281-752 | HSTNSUBURB | 9533 | — | Yes |
| 281-753 | HOUSTON | 6506 | — | Yes |
| 281-754 | HSTNSUBURB | 9533 | — | Yes |
| 281-755 | HOUSTON | 6506 | 2005-03-18 | Yes |
| 281-756 | ALVIN | 9533 | — | Yes |
| 281-757 | HOUSTON | 6506 | 2005-05-11 | Yes |
| 281-758 | CYPRESS | 9533 | 2005-12-08 | Yes |
| 281-759 | HSTNSUBURB | 9533 | — | Yes |
| 281-760 | HSTNSUBURB | 9533 | — | Yes |
| 281-761 | CLEVELAND | 7670 | — | Yes |
| 281-762 | RICHMNRNBG | 7670 | — | Yes |
| 281-763 | HOUSTON | 6114 | 2006-01-05 | Yes |
| 281-764 | HUFFMAN | 7670 | — | Yes |
| 281-765 | BAMMEL | 9533 | — | — |
| 281-766 | PINEHURST | 903C | — | Yes |
| 281-767 | ROSHARON | 7670 | — | Yes |
| 281-768 | HOUSTON | 6506 | 2006-04-27 | Yes |
| 281-769 | KATY | 7074 | — | Yes |
| 281-770 | LANGHAMCRK | 6506 | — | — |
| 281-771 | SPRING | 516C | 2014-06-09 | Yes |
| 281-772 | HOUSTON | 5562 | — | Yes |
| 281-773 | HOUSTON | 5562 | — | Yes |
| 281-774 | BAMMEL | 9533 | — | Yes |
| 281-775 | BAMMEL | 9533 | — | Yes |
| 281-776 | HSTNSUBURB | 9533 | 2001-12-27 | — |
| 281-777 | HOUSTON | 6506 | — | Yes |
| 281-778 | MISSOURICY | 2091 | — | — |
| 281-779 | HOUSTON | 6701 | 2006-03-13 | Yes |
| 281-780 | HOUSTON | 5562 | 2006-05-18 | Yes |
| 281-781 | BAMMEL | 7074 | — | Yes |
| 281-782 | HOUSTON | 6534 | 2001-05-08 | — |
| 281-783 | SHELDON | 7074 | — | Yes |
| 281-784 | WESTFIELD | 9533 | — | Yes |
| 281-785 | HOUSTON | 6534 | — | — |
| 281-786 | APOLLO | 6534 | — | Yes |
| 281-787 | HOUSTON | 6534 | — | — |
| 281-788 | HOUSTON | 5562 | — | Yes |
| 281-789 | PINEHURST | 318J | 2005-09-19 | Yes |
| 281-790 | SPRING | 6701 | 2022-03-03 | Yes |
| 281-791 | SPRING | 7715 | — | — |
| 281-792 | APOLLO | 9533 | — | — |
| 281-793 | HOUSTON | 6534 | — | — |
| 281-794 | HOUSTON | 6534 | — | — |
| 281-795 | HOUSTON | 6534 | — | — |
| 281-796 | HOUSTON | 6534 | — | — |
| 281-797 | HOUSTON | 6534 | — | — |
| 281-798 | HOUSTON | 6534 | — | — |
| 281-799 | HOUSTON | 6534 | — | — |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.